MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the input impedance of voltage divider configuration? |
| A. | R1+R2 |
| B. | RG |
| C. | |
| D. | 0 |
| Answer» D. 0 | |
| 2. |
If gain is need to be stabilized, which of the following element is used for a Common source amplifier? |
| A. | Capacitive |
| B. | Inductive |
| C. | Resistive |
| D. | LC tank circuit |
| Answer» D. LC tank circuit | |
| 3. |
For a self bias amplifier, RS=RD, the output will be_________________ |
| A. | Same as Input |
| B. | Same as input but phase reversed |
| C. | 0 |
| D. | Infinite |
| Answer» C. 0 | |
| 4. |
A sinusoidal signal has 1.5V at t=2S, If this signal is given to Common source amplifier with |Av|=5V, what will be its output at t=2S? |
| A. | 7.5V |
| B. | -7.5V |
| C. | 0 |
| D. | 15V |
| Answer» C. 0 | |
| 5. |
What is the reason for connecting a capacitor in parallel with Rs? |
| A. | It blocks the noise |
| B. | For ac signal it acts a short circuit resulting in grounding source terminal |
| C. | It blocks the noise & for ac signal it acts a short circuit resulting in grounding source terminal |
| D. | To increase impedance |
| Answer» D. To increase impedance | |
| 6. |
A Self bias configuration contains RD=3.3, Rs=1 KΩ, RG=1MΩ and gm=1.5mS. Determine Av? |
| A. | -2 |
| B. | 3 |
| C. | -4 |
| D. | 5 |
| Answer» B. 3 | |
| 7. |
IF_GAIN_IS_NEED_TO_BE_STABILIZED,_WHICH_OF_THE_FOLLOWING_ELEMENT_IS_USED_FOR_A_COMMON_SOURCE_AMPLIFIER??$ |
| A. | Capacitive |
| B. | Inductive |
| C. | Resistive |
| D. | LC tank circuit |
| Answer» D. LC tank circuit | |
| 8. |
Which of the following statement is true about FET common source amplifier compared to BJT amplifier? |
| A. | It has High input impedance |
| B. | It has low input impedance |
| C. | No input Voltage is needed |
| D. | Input Voltage is needed |
| Answer» B. It has low input impedance | |
| 9. |
For a self bias amplifier, RS=RD, the output will be_________________ |
| A. | Same as Input |
| B. | Same as input but phase reversed |
| C. | 0 |
| D. | Infinite |
| Answer» C. 0 | |
| 10. |
A sinusoidal signal has 1.5V at t=2S, If this signal is given to Common source amplifier with |Av|=5V, what will be its output at t=2S? |
| A. | 7.5V |
| B. | -7.5V |
| C. | 0 |
| D. | 15V |
| Answer» C. 0 | |
| 11. |
What is the reason for connecting a capacitor in parallel with Rs? |
| A. | It blocks the noise |
| B. | For ac signal it acts a short circuit resulting in grounding source terminal |
| C. | It blocks the noise & for ac signal it acts a short circuit resulting in grounding source terminal |
| D. | To increase impedance |
| Answer» D. To increase impedance | |
| 12. |
A Self bias configuration contains RD=3.3, Rs=1 KΩ, RG=1MΩ and gm=1.5mS. Determine Av?$ |
| A. | -2 |
| B. | 3 |
| C. | -4 |
| D. | 5 |
| Answer» B. 3 | |
| 13. |
Which of the following is true about the common Source amplifier? |
| A. | It has low input impedance |
| B. | It has high output impedance |
| C. | Infinite gain |
| D. | Phase reversal voltage output |
| Answer» E. | |
| 14. |
An amplifier is designed using fixed bias configuration, what is its input impedance (source Resistor is un bypassed)? |
| A. | R<sub>D</sub>+r<sub>d</sub> |
| B. | R<sub>G</sub> |
| C. | R<sub>D</sub> || r<sub>d</sub> |
| D. | 0 |
| Answer» C. R<sub>D</sub> || r<sub>d</sub> | |
| 15. |
An amplifier is designed using fixed bias configuration, what is its output impedance (source Resistor is bypassed)? |
| A. | R<sub>D</sub>+r<sub>d</sub> |
| B. | R<sub>G</sub> |
| C. | R<sub>D</sub> || r<sub>d</sub> |
| D. | 0 |
| Answer» D. 0 | |